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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /kernel/trunk/generic/src/mm/frame.c @ 538

  → /kernel/trunk/generic/src/mm/frame.c @ 539

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 538 → Rev 539

/kernel/trunk/generic/src/mm/frame.c
43,6 → 43,11
spinlock_t zone_head_lock; /**< this lock protects zone_head list */
link_t zone_head; /**< list of all zones in the system */
/** Blacklist containing non-available areas of memory.
*
* This blacklist is used to exclude frames that cannot be allocated
* (e.g. kernel memory) from available memory map.
*/
region_t zone_blacklist[ZONE_BLACKLIST_SIZE];
count_t zone_blacklist_count = 0;
122,22 → 127,29
/* Allocate frames from zone buddy system */
cur = buddy_system_alloc(zone->buddy_system, order);
tmp = buddy_system_alloc(zone->buddy_system, order);
/* frame will be actually a first frame of the block */
frame = list_get_instance(cur, frame_t, buddy_link);
ASSERT(tmp);
/* Update zone information. */
zone->free_count -= (1 << order);
zone->busy_count += (1 << order);
/* Frame will be actually a first frame of the block. */
frame = list_get_instance(tmp, frame_t, buddy_link);
/* get frame address */
v = FRAME2ADDR(zone, frame);
spinlock_unlock(&zone->lock);
spinlock_unlock(&zone_head_lock);
interrupts_restore(ipl);
if (flags & FRAME_KA)
v = PA2KA(v);
spinlock_unlock(&zone->lock);
spinlock_unlock(&zone_head_lock);
interrupts_restore(ipl);
return v;
}
/** Free a frame.
190,9 → 202,12
if (!--frame->refcount) {
buddy_system_free(zone->buddy_system, &frame->buddy_link);
}
/* Update zone information. */
zone->free_count += (1 << frame->buddy_order);
zone->busy_count -= (1 << frame->buddy_order);
spinlock_unlock(&zone->lock);
spinlock_unlock(&zone->lock);
spinlock_unlock(&zone_head_lock);
interrupts_restore(ipl);
}
230,7 → 245,15
list_initialize(&zone_head);
}
/** Create frame zones in region of available memory.
*
* Avoid any black listed areas of non-available memory.
* Assume that the black listed areas cannot overlap
* one another or cross available memory region boundaries.
*
* @param base Base address of available memory region.
* @param size Size of the region.
*/
void zone_create_in_region(__address base, size_t size) {
int i;
zone_t * z;
268,7 → 291,6
}
/** Create frame zone
*
* Create new frame zone.
373,9 → 395,8
* @return Buddy for given block if found
*/
link_t * zone_buddy_find_buddy(buddy_system_t *b, link_t * block) {
frame_t * frame, * f;
frame_t * frame;
zone_t * zone;
link_t * cur;
count_t index;
bool is_left, is_right;
382,11 → 403,6
frame = list_get_instance(block, frame_t, buddy_link);
zone = (zone_t *) b->data;
/*
* (FRAME_INDEX % 2^(ORDER+1)) == 0 ===> LEFT BUDDY
* (FRAME_INDEX % 2^(ORDER+1)) == 2^(ORDER) ===> RIGHT BUDDY
*/
is_left = IS_BUDDY_LEFT_BLOCK(zone, frame);
is_right = !is_left;
406,8 → 422,7
}
}
return NULL;
return NULL;
}
/** Buddy system bisect implementation